Another man - who became a key police informant and was not charged - admitted carrying the murder weapon into the bar, says the document, written by Deputy District Attorney Al Giannini.

Giannini writes Tran's killing was a cold, calculated, public execution. As stunned bar patrons watched, Tran was shot in the back, and after he fell to the sidewalk he was shot twice more in the head, the document says.

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According to the document: two of the four defendants allegedly told police they had known Tran was to be killed and had later disposed of the murder weapon; the youth accused of shooting Tran told a female friend he did it; the man accused of ordering the slaying told police he had talked to Tran at the bar and met with the defendants after the shooting, but denied a further role.

The defendants pleaded not guilty, and their lawyers contend the document is inaccurate. Two of the lawyers also attacked the informant's credibility.

Detailed account

The record gives the most detailed police account to date of the sidewalk shooting of Tran, whose killing is mysteriously linked to the slaying of lawyer Dennis Natali.

Tran, 37, was shot outside the Pierce Street Annex bar at Fillmore and Greenwich streets about 1:36 a.m. Nov. 15. Natali was shot eight minutes earlier and about a mile away in his BMW at Fillmore and Steiner streets. Police later traced a phone number on Natali's pager to the Tenderloin apartment of a female friend of the youth accused of shooting Tran.

Giannini writes that Tran's slaying was ordered by Man Leung Yu, 40, of San Francisco, and carried out by a 17-year-old who had previously clashed with Tran. It says the defendants killed Tran because he'd recently returned from prison and was trying to reclaim control of protection money extorted from Tenderloin massage parlors.

The Examiner has withheld the names of witnesses and informants in the record at the request of police, who fear for their safety. A minor informant in the case was shot and his parents' house was burned after he talked to police, Lt. Kevin Dillon said.

A call to Oakland

According to Giannini:

A woman who lived at the Tenderloin apartment linked to Natali's pager told police that two days before Tran's killing, the 17-year-old used her phone to ask someone in Oakland for a gun.

The youth said he was angry because Tran had warned him he was "playing with Chinatown." The youth told Tran that if he saw him outside the Tenderloin, he'd shoot him, the woman told police.

The day before the shooting, the youth told the woman that if anything happened to him, she could get money from "Ah Leung." Police later said "Ah Leung" was Man Leung Yu.

The evening of the shooting, another female resident of the apartment reportedly met the youth at the E.M. Cafe on Polk Street, the scene of past gang activity. The youth had a gun in his waistband and told her he was "doing some business" with it, this woman said, adding that he was with Huang, 24, of San Francisco.

Tran and the youth were enemies, she said, and Tran had threatened to kill the youth.

Later that evening, Huang drove the eventual informant to the Pierce Street Annex, where the informant said he saw Yu talking with Tran. He also said he saw Kwong "Ghost Shadow Peter" Tse, 26, of Oakland. Huang asked the informant to get a gun from Yu's car and hide it in a planter box, he said.

The informant admitted bringing the gun from the car into the bar, insisting he thought he was being asked only to provide backup in case of trouble. He denied knowing there would be a killing until just before leaving the bar, when the youth allegedly told him, "We're going to get (Tran)."

"He don't want to talk'

About eight minutes before the shooting, the informant said, Yu and Tran ended their hourlong talk. Yu then turned to the youth, made a slicing gesture with his finger across his neck and said, "He don't want to talk," he said.

The informant and Huang followed Tran from the bar and confronted him at his car. According to the informant, Huang, Tse and the youth all urged him to shoot Tran. When he refused, the youth grabbed the gun from the informant's waistband and with Tse approached Tran, the informant said.

Tran ran back toward the bar. The youth chased him and killed him, he said.

The informant and Huang ran to Huang's car, and Huang drove off, flashing his lights and honking to find the youth. They quickly picked up the youth and Tse, and drove to a pier. The informant said he had waited in the car while the others tossed the gun into the Bay.

Ten days later, Huang and the youth returned to the E.M. Cafe, where the youth allegedly told one of the women from the apartment that he had killed Tran because it was

"either me or him . . . I shot him a couple times in the back."

The youth told her to discard a plastic bag containing bullets, she said. When she asked about the gun, he allegedly replied, "Don't worry, it's in the ocean."

The youth, who has an extensive criminal record, was arrested Dec. 6 for allegedly shooting Tran.

Detectives quiz suspects

On Dec. 10, detectives conducted lengthy interrogations of Yu, Tse and Huang. Yu admitted being at the bar, talking to Tran and knowing the youth, but denied any further role, the document says.

Huang admitted being at the bar and knowing that "they" were going to kill Tran. He denied a direct role in the killing, but admited driving the getaway car and helping to hide the gun, it says.

Tse admitted being at the bar, knowing Tran was to be killed, following Tran from the bar and seeing the youth shoot Tran. He also admitted helping to dump the gun, it says.

Authorities charged the three with murdering Tran. But detectives' hopes of pinning Natali's slaying on them were dashed. They concluded the defendants hadn't had time to kill Natali.

Bill Fazio, Yu's lawyer, said his client denied ordering a murder and maintained he had been at the bar just for a drink. Tamburello, Huang's lawyer, said his client denied going to the bar with any of the defendants and had no idea a murder was in the offing.&lt;